Joseph Henri Maria Steenbrink (born 1947) is a Dutch mathematician, specializing in algebraic geometry.
His research deals with singularity theory (including three-dimensional Calabi-Yau varieties), mixed Hodge structures (after Pierre Deligne), and variation of Hodge structures[2] (after Phillip Griffiths).
Steenbrink was an Invited Speaker at the International Congress of Mathematicians in 1990 in Kyoto.
[3] His doctoral students include Aise Johan de Jong.
In addition to his mathematical work, Steenbrink is a harpsichordist, organist, and choir singer.